Window-sash fastener



J. P. CROSBY.

WINDOW SASH FASTENER.

APPLICATION man DEC. s, 1919.

Patented Nov. 22, 1921.

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n w o m 0 p mP m NWHWNWWWWNW UNITED STATES PATENT OFFICE.

WINDOW-SASH FASTENER.

Application filed December 8, 1919.

T 0 all whom it may concern:

. Be it known that T, JOHN P. CROSBY, a citizen of the United States,residing in the city of St. Louis and State of Missouri, have inventedcertain new and useful Improvemerits in \l iIidow-Sash Fasteners, ofwhich the following is a specification.

My invention relates to window sash fasteners and has for its object toprovide a simple and efiicient device which will lock two sashestogether in their closed, or in any desired open position for regulatingthe air supply to a room and still be secure from intruders.

A. further object of the invention is to provide means which will alinethe two window sashes when locked together and to spread the sash so asto cause them to bind against the window frame stops to stop air leakagearound the sides of the sash and to prevent their being moved until thefastener has been released.

With theabove and other objects in view, the invention consists incertain novel features of construction, arrangement and combination ofparts hereinafter described and finally pointed out in the claim heretoappended.

Referring to the accompanying drawings forming a part of thisspecification wherein like characters of reference denote similar partsthroughout the several views:

Figure 1, is a front elevation showing a window sash to which myinvention is applied.

Fig. 2, is a vertical sectional view of a part of the window sash.

Fig. 3, is a sectional view taken on line 3-3 of Fig. 1.

Fig. 1, is a plan view of the fastener applied to a window sash.

Fig. 5, is a top plan view of the bolt holder.

Fig. 6, is an elevation of the locking bolt.

Referring to the drawings, the reference character 1 designates theupper sash; 2, the lower sash, and 3, the sash stops.

In carrying out the aim of my present invention, I provide the uppersash 1 with a metallic strap 4 having a plurality of transverse slottedopenings 5 and central counter sunk portions 5' arranged at spacedintervals along the full length of the strap l. The strap 4: is suitablyfixed to the sash, as is manifest.

6 represents a suitable bolt holder having Specification of LettersPatent.

Patented Nov. 22, 1921.

Serial No. 343,387.

the ears 7 and a screw threaded opening 8. The holder is fixed to thetop face of the meeting rail 9 of the lower sash by means of screws, orthe like 10.

11 indicates a suitable screw threaded locking bolt having one endreduced to form a nonthreaded stud or projection 12. The end of the bolt11 may be rounded off, as at 13, also the end of the stud may berounded, as at 14. The other end of the bolt 11 is provided with asuitable thumb-piece 15 for convenience of turning the locking bolt 11.The locking bolt 11 is carried in the screw threaded opening 8 of theholder 6, as is manifest. The holder is fixed to the lower sash adjacentthe slotted strap 4:, as shown in Figs. 1 and 3.

The operation of the device is as follows:

lVhen either sash has been moved to the position desired, the lockingbolt 11 is turned so as to move the bolt in direction of the slottedstrap 4:. The reduced end 12 of the locking bolt 11 will enter theslotted opening 5 in alinement therewith and when the bolt 11 has beentightened as much as possible, the end 15 of the bolt 11 will engage thecounter-sunk seats 5, as is manifest, causing the side rails of the'sashto bind tightly against the sash-guides, or stops 3 to frictionally lockthe sash against movement until the lock bolt has been loosened.

All sashes have side slap or lateral movement owing to their more orless loose fit, and, if the two sashes are out of vertical alinementwhen the bolt 11 is tightened, they will be drawn into verticalalinement just as soon as the end 13 of the bolt 11 engages thecounter-sunk seat 5 of the strap 4, as is manifest. No matter how muchthe sashes are out of alinement, the projection, or stud 12 will enterthe slotted opening and when the end 13 of the bolt 11 comes intocontact with the counter-sunk seat, the sash will be crowded or drawninto alinement, as is manifest. The sashes when locked are perfectlystationary against movement owing to forced contact with the sash guides3, and this forced contact will prevent any rattling of the sash andwill also prevent air from entering the room around the side rails ofthe sash.

It is evident from the foregoing description, that the device is simplein construc tion, easily applied to the sash, conveniently operated andthat it not only serves to lock the sash in desired position, but alsoserves to prevent any rattle of the window sash.

The many advantages of the herein described invention will readilysuggest themselves to those skilled in the art to which the inventionappertains.

I do not wish to be understood ashaving limited myself to the details ofconstruction shown and described, but desire to have it understood thatthe invention I have shown in the drawings is merely illustrative, as itis manifest that various minor changes may be made in the exactconstruction and particular arrangement of parts without departing fromthe spirit of my invention, hence I reserve the right to make any suchchanges or modifications as may fairly fall within the scope of theappended claims when fairly construed.

What I claim is:

In a window sash lock, the combination with an interiorly screw-threadedholder fixed to the meeting rail of the lower sash, a

metallic strap member fixed to one of the side rails of the upper sash,said strap memher being provided witha plurality of suitably spacedhorizontally disposed slotted openings and each strap member beingprovided upon its outer face centrally of the horizontal slottedopenings with a counter sunk seat, a screw-threaded locking bolt carriedby the screw-threaded holder fixed to the meeting rail of the lowersash, a cylindrical stud of less diameter than the screwthreaded portionof the locking bolt and extending inwardly from the inner end of saidbolt to form a shoulder at the junction of said stud with thescrew-threaded portion of said bolt, said cylindrical stud adapted toengage in a slotted opening of the strap member and the shoulder of saidbolt adapted to frictionally engage the counter sunk seat of the strapmember for forcing the window sash into vertical alinement and said studand shoulder both acting to lock the sash together and prevent movementof either sash in either direction.

In testimony whereof, I have hereunto signed my name to thespecification.

JOHN P. CROSBY,

